Photo by Melody

PlantFiles: King Protea, Giant Protea
Protea cynaroides

Family: Proteaceae (pro-tee-AY-see-ee) (Info)
Genus: Protea (PROH-tee-uh) (Info)
Species: cynaroides (sin-nar-OY-deez) (Info) (sin-ar-OY-deez) (Info)

2 vendors have this plant for sale.

6 members have or want this plant for trade.

Tropicals and Tender Perennials

12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting
Flowers are good for drying and preserving

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)

Patent Information:
Unknown - Tell us

Propagation Methods:
From softwood cuttings

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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By bootandall
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Thumbnail #3 of Protea cynaroides by Ulrich

By Ulrich
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By bootandall
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Thumbnail #6 of Protea cynaroides by EricInSF

By paolotakeru
Thumbnail #7 of Protea cynaroides by paolotakeru

There are a total of 48 photos.
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No positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral htop On Oct 24, 2007, htop from San Antonio, TX (Zone 8b) wrote:

I have not grown this plant.

The king protea is the national flower of South Africa and is commercially grown in Australia and Hawaii. Bracts vary in color. Naturally occuring hybrids may have bracts that are silvery pink, deep clear pink or sometimes a deep crimson. When cut, the blooms last for weeks. When visiting Maui, I bought four buds from 2 nice young men on the side of the road while traveling to Hana for 50 cents each. They were not fully open when I had to leave after an 8 day visit. Too bad I could not bring them with me ... they cost a fortune here.

Neutral Kell On Oct 9, 2006, Kell from Northern California, CA (Zone 9b) wrote:

Protea cynaroides have flower heads that have the flowers in the center with colorful bracts surrounding them. The flowerheads vary in size from 5 inches to 12 inches. The colorful outside bracts vary in color from creamy white to a deep pink, though the paler pinks with a silver sheen are the most sought after. This is a woody shrub which grows to about 6 feet that has thick stems and large shiny green leaves.

The flowerheads are prized as a cut flower and add lots of drama to a bouquet.


This plant has been said to grow in the following regions:

Aliso Viejo, California
Hayward, California
Hidden Meadows, California
Manhattan Beach, California
Mission Viejo, California
San Leandro, California
Vista, California
Boca Raton, Florida
Vero Beach, Florida

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